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In space, does light travel forever or fade as the universe expands?
Light released by a distant star does not simply wink out after crossing some threshold of space. In a vacuum, photons keep ...
Cosmological redshift depends upon a galaxy's distance. Credit: NASA/JPL-Caltech/R. Hurt (Caltech-IPAC) In 1929 Edwin Hubble published the first solid evidence that the universe is expanding. Drawing ...
In physics, like in life, there are often multiple solutions to a problem that will give you the same result. In our actual Universe, however, there's only one way that reality actually unfolds. The ...
Scientists know very little about the mysterious force dubbed “Dark Energy” that seems to be quickening the expansion of the universe but, according to LSU Physics and Astronomy Associate Professor ...
RECENT spectral surveys of discrete radio sources have not revealed any significant dependence of spectral index on apparent intensity 1–3. It is therefore of interest to determine the way in which ...
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